It was either the worst coverup in the history of coverups or a half completed murder-suicide, according to the Crown's closing arguments in Paul Kenyon's second degree murder trial today in a Newmarket courtroom.

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The father of two from Gravenhurst is charged with the second degree murder of his girlfriend, Marion Deacon,ba March 7, 2010 in Whitchurch-Stouffville.

Her lifeless body was pulled from her Gormley home, which had been on fire.

"The Crown's theory is that he left her to die on that floor for up to six hours," said Gemma Sang in her closing arguments.

She told the jury Mr. Kenyon hated his girlfriend of four years that night because she once again wanted to end their tumultuous relationship.

Ms Sang said Ms Deacon came home that night to find Mr. Kenyon either high or trying to get drugs. The couple fought.

"Ms Deacon was in his way that night," according to the Crown.

"Her killer was in a rage," Ms Sang said, adding whomever hit her in the head with the baseball bat did so with such "significant force" as to crack her skull.

She also said it was "personal".

Testimony from neighbours revealed Ms Deacon came home after her waitressing job in Aurora March 6 and let her two dogs out. They were heard barking by a neighbour.

"That tells (you) there was no stranger in her house when she came home," according to Ms Sang.

The defence claimed Mr. Kenyon's drug dealer and another man were inside Ms Deacon's Doner Street home, near Stouffville Road and Hwy. 404, when she arrived. A fight broke out and one of them hit Ms Deacon about the head, killing her.

The fight, the defence claimed, was over a $200 crack debt owed by Mr. Kenyon.

"Why kill the person who came home with hundreds of dollars in tips?" Ms Sang asked the jurors to consider.

Ms Deacon had about $300 in tips on her. It has never been found.

Ms Sang said Mr. Kenyon panicked and ran out of the burning house unable to explain what happened, leading to a multitude of lies.